Rose plant Jacette

ABSTRACT

A hybrid tea rose variety having an attractive high centered white flower with pleasing fragrance coupled with heavy continuous flower production on long straight stems. Also, these flowers occasionally have foliaceous sepals.

This present invention relates to a new and distinct variety of roseplant of the hybrid tea class which was originated by crossing thevariety Bernadette, unpatented, with the variety Coquette, U.S. PlantPat. No. 4,019.

The primary objective of this breeding was to produce a new rose varietyof the hybrid tea class with white flowers suitable for greenhouse cutflower production. This objective was substantially achieved along withother desirable improvements as evidenced by the following uniquecombination of characteristics which are outstanding in the new varietyand which distinguish it from its parents as well as from all othervarieties of which I am aware:

1. Heavy and continuous production;

2. Strong pleasing fragrance;

3. Attractive white flower;

4. Occasional foliaceous sepals; and

5. Long straight stems.

Asexual reproduction of this new variety by budding, as performed atWasco, Calif., shows that the foregoing characteristics and distinctionscome true to form and are established and transmitted through succeedingpropagations.

The accompanying illustration shows typical specimens of the vegetativegrowth and flowers of this new variety in different stages ofdevelopment, depicted in color as nearly true as it is reasonablypossible to make the same in a color illustration of this character.

The following is a detailed description of my new rose cultivar withcolor in terminology in accordance with The Royal Horticultural SocietyColour Chart except where ordinary dictionary significance of color isindicated.

Parentage:

Seed parent.--Bernadette, unpatented.

Pollen parent.--Coquette, U.S. Plant Pat. No. 4,019.

Classification:

Botanical.--Rosa hybrid.

Commercial.--Hybrid tea.

FLOWER

Observations made from specimens grown in a greenhouse at Irvine, Calif.in June.

Blooming habit: Continuous.

Bud:

Size.--11/2" when petals start to unfurl.

Form.--Long, pointed ovoid.

Color.--When sepals first divide, Green White Group 157D sometimestipped with a pale Pink (Red Group 56D). The base of the bud is coloredGreyed Yellow 160D.; when half blown, upper side of petals White (Group155D); lower side of petals, White (Group 155D).

Sepals.--Color: Green 137D. Three appendaged sepals normally appendagedand sometimes foliaceous. Two unappendaged sepals hairy edge withglands.

Receptacle.--Color: Green 137D. Shape: Funnel. Size: Medium. Surface:Smooth.

Peduncle.--Length: Medium. Surface: Smooth, with few glandular. Color:Medium Green. Strength: Stiff.

Opening.--Petals recurve slightly and become lightly quilled when fullyopen.

Open bloom:

Size.--Medium. Average open size 4".

Borne.--Singly.

Stems.--Long.

Form.--When first open, high center. Permanence: Flattens.

Petalage.--Number of petals under normal conditions: 45-50.

Color.--Center of flower: Upper side of petals, White 155D; reverse sideof petals, White 155D. Base of petals, Slight yellowish color, YellowGroup 5D. Major color: White.

Variegation.--None.

Discoloration.--General tonality at end of first day: Remains White155D. Third day: Remains White 155D.

Fragrance.--Strong.

Petals:

Texture.--Medium.

Shape.--Round to oval, deltoid.

Form.--Tips slightly recurved, edges slightly quilled.

Arrangement.--Imbricated. Petaloids in center, few.

Persistence.--Drop off cleanly.

Lastingness.--On the plant, long. As cut flower, long.

Reproductive parts:

Anthers.--Many. Color: Yellow. Arrangement: Regular around styles.

Filaments.--Color: Greenish.

Pollen.--Lemon yellow.

Styles.--Color: White.

Stigmas.--Color: Red.

PLANT

Form: Bush.

Growth: Vigorous.

Foliage: Number of leaflets on normal mid-stem leaves: 5-7.

Size.--Medium.

Quantity.--Normal.

Color.--New foliage: Reddish turning Green 137A. Old foliage: Green139A.

Leaflets:

Shape.--Broadly elliptic.

Texture.--Smooth.

Edge.--Serrated.

Serration.--Single, small.

Petiole.--Rachis: Color: Green. Underside: Rough, with prickles.

Stipules.--Medium, bearded.

Disease resistance.--Normally resistant to mildew, under normal growingconditions at Irvine, Calif.

Wood:

New wood.--Color: Light green. Bark: Smooth.

Old wood.--Color: Green. Bark: Smooth.

Prickles:

Quantity.--On main canes from base: Ordinary. On laterals from maincanes: Ordinary.

Form.--Hooked downward.

Color when young.--Red.

Small prickles:

Quantity.--On main stalks, none. On laterals, none.

I claim:
 1. A new and distinct variety of rose plant of the hybrid teaclass, substantially as herein shown and described, characterizedparticularly as to novelty by the unique combination of an attractivehigh centered white flower with pleasing fragrance coupled with heavycontinuous flower production on long straight stems. Also, these flowersoccasionally have foliaceous sepals.